Abstract:
This study aimed at investigating the problems encountered by EFL learners in using English derivational and inflectional verb morphemes .A test was used as a tool for data collection , which was handed by second year students of SUST. The sample of this study was 40 students chosen randomly. Data were analyzed statistically using SPSS programme . The findings showed that second year students have serious problems in deriving verbs from verb and other word classes with regard to prefixes and suffixes , second year students have problems in using inflectional verb morphemes . The study revealed that derivational verb morphemes are more difficult than inflectional . According to the above results , the researcher recommended that : students should widen their knowledge concerning derivational and inflectional verb morphemes . Students should study the word classes since verbs are one of them . Teachers should intensify the course of such morphemes and give students extra examples concerning these morphemes . The thesis was concluded in some suggestions for further studies